Question

- {4(d +3) -5[3d - 2(2d +7)]-8]} =10d - 6

Answer 1

= (4d+12-8-5(-2*2d-14+3d))=-10d+6
= ( 4d+4-5(-4d+3d-14))=-10d+6
= (4d+4-5(-1d-14))=-10d+6
= (4d+4-5(-d-14))=-10d+6
= (4d+4+5d+70)=10d+6
= (9d+74)=-10d+6
=9d+74=-10+6
=9d=-10d-68
=19d= -68
d= -68/19.

- JotaVM